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Fast heart rate
Dizziness    
Fatigue    

10 possible causes of "Fast heart rate, Dizziness, F..."
Symptoms:
  • Dementia
  • Moist skin
  • Fast heart rate
  • Dizziness
  • Fatigue
  • Pain
1. Low Blood Sugar (Hypoglycemia)
Also known as hypoglycemia, low blood sugar can be a dangerous condition. People often complain about low blood sugar. However, serious hypoglycemia is rare in adults and children over the age of 10 who are no...
This condition is considered a medical emergency. Urgent care may be required.
Symptoms:
  • Chapped lips
  • No urine output
  • Fast heart rate
  • Dizziness
  • Fatigue
  • Coma
2. Dehydration
Dehydration occurs when your body loses more fluid than you drink. When the body loses too much water, organs, cells, and tissues fail to function. Dehydration can also cause shock. Severe dehydration must be treate...
This condition is considered a medical emergency. Urgent care may be required.
Symptoms:
  • Pain
  • Blood in stool
  • Fast heart rate
  • Dizziness
  • Fatigue
  • Clammy skin
3. Bleeding
Bleeding is the name commonly used to describe blood loss. It can refer to blood loss inside the body (internal bleeding) or blood loss outside of the body (external bleeding). Blood loss can occur in almost any area o...
This condition is considered a medical emergency. Urgent care may be required.
Symptoms:
  • Abnormal heart rhythms
  • Headache
  • Fast heart rate
  • Dizziness
  • Fatigue
  • Crushing chest pain
4. High Blood Pressure Overview
Hypertension, or high blood pressure (HBP), increases the risk of heart attack, stroke & other health problems. Learn HBP symptoms & get treatment under an MD's care.
Symptoms:
  • Ataxia
  • Headache
  • Fast heart rate
  • Dizziness
  • Fatigue
  • Numbness
5. Hypovolemic Shock
Hypovolemic shock is a life-threatening condition that results when you lose more than 20 percent (one-fifth) of your body's blood or fluid supply. This severe fluid loss makes it impossible for the heart to pum...
This condition is considered a medical emergency. Urgent care may be required.
Symptoms:
  • Dizziness
  • Tired
  • Fast heart rate
  • Fatigue
  • Bounding pulse
  • General weakness
6. Atrial Fibrillation and Flutter
Atrial fibrillation and atrial flutter are irregular heart rhythms that occur when the upper chambers of your heart (the atria) beat too fast.Atrial fibrillation can be sustained or can occur in bursts. It creates a...
Symptoms:
  • Fatigue
  • Lightheadedness
  • Fast heart rate
  • Dizziness
  • Shortness of breath
  • Heart rate altered
7. Paroxysmal Supraventricular Tachycardia (PSVT)
Paroxysmal supraventricular tachycardia (PSVT) is a faster-than-normal heart rate. The term paroxysmal means that it only happens from time to time. In the case of PSVT, the rapid heart rate can last from a few minute...
This condition is considered a medical emergency. Urgent care may be required.
Symptoms:
  • Nausea
  • Coma
  • Fast heart rate
  • Dizziness
  • Fatigue
  • Rapid breathing
8. Addisonian Crisis (Acute Adrenal Crisis)
When we're stressed out, our adrenal glands produce a hormone called cortisol. Cortisol helps our bodies respond effectively to stress. It also plays a role in bone health, immune response, and the metabolism of food...
This condition is considered a medical emergency. Urgent care may be required.
Symptoms:
  • Nausea
  • Fatigue
  • Fast heart rate
  • Dizziness
  • Vomiting
  • Poor balance
9. Acute Mountain Sickness
Hikers, skiers and adventurers who travel to high altitudes can sometimes develop acute mountain sickness, also referred to as altitude sickness or high altitude pulmonary edema. It typically occurs at about 8,000 fee...
Symptoms:
  • Confusion
  • Dizziness
  • Fast heart rate
  • Fatigue
  • Heart rate altered
  • Sunken eyes
10. Diabetes Insipidus
Diabetes insipidus (DI) is a rare condition that occurs when your kidneys are not able to conserve water. It results in extreme thirst for water and frequent urination. There are several types of DI, and they can ofte...

This feature is for informational purposes only and should not be used to diagnose.
Please consult a healthcare professional if you have health concerns.
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